Amazon.com: PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - PPLBX10A :
KENWOOD KSC-SW11 ACTIVE UNDERSEAT SUBWOOFER AMP BUILT-IN 150 WATTS BASS CONTROL 19048202215 | eBay
Phoenix Gold 10” Dual-Voice-Coil 2-Ohm Loaded Subwoofer Enclosure Black TXTRB10 - Best Buy